2-PK SYLVANIA 921 Long Life Miniature Bulb. The SYLVANIA Long Life Mini Bulb brings increased bulb life to various automotive lighting applications. These lamps have been engineered to withstand a sizeable amount of road shock and vibration. They are also constructed with a robust filament and proprietary gas mixture that results in much longer life. SYLVANIA lamps are designed to be durable lower maintenance and provide greater safety. ANSI Code: 921 Alternate Part Number: W16W Sylvania Part Number: 921LL.BP2 Long Life Primary Application: Backup Brake CHMSL Courtesy Dome Fog Tail Trunk or Cargo Turn Signal Bulb Technology: Incandescent Bulbs Filament: C-2R Base: W2.1x9.2d Bulb Shape: T5 Wattage: 17.92W Lumens: 264LM Color Temperature: 2800K Amperage Draw: 1.4Amp Voltage: 12V Rated Life: 1000Hours Bulb Diameter (in): 0.62 Overall Lenght (in): 1.51